Street-lamp sign



(No Model.)

W. P. BUTLER;

STREET LAMP SIGN.

Patented- Aug. 4, 1885.

z Veiz Z027 UNITED STATES PATENT OFFICE.

WILLIAM P. BUTLER, OF CHICAGO, ILLINOIS.

STREET-LAMP siGN.

SPCIFICATION forming part of LettersPatent No. 323,850, date August 4:, 1885.

Application filed March 18, 1884.

T o whom 'it may conce'n Beit known that I, WILLIAM P. BUTLER, a citizen of the United States, residing at Ghicago, in Uook county, in the State of Illinois, have invented a new and useful Street-Lamp Sign, of which the following is a specification.

My invention relates to that class of streetsigns which are attaehed to lamps on public thoroughfares, more particularly to indicate the streets; but it may be applied to other purposes where durability is required.

Heretofore the most usual mode of indicating streets on the street-lainps has been to paint the letters either on' the pane of glass or on a separate strip of glass attaohed to the pane, in dark or opaque lettering, which renders it indistinct unless the light is Very brilliant behind it, and it is then only the shadow which indicates the street, and it is easily effaced by wear or dirt.

instead of indioating the name by the shadow, as usual. my invention is for the purpose of indicatin g the name of the street by translucent lettering upon a strip of plate-glass placed in the lamp, in a slot made for the (No model.)

purpose, as is shown in the drawing and indicated by A; or it may be across one of the ordinary lights of glass. The name of the street is on this strip of glass, in light, translucent letters on a dark ground.

The manner in which I accomplish the making of the letters is as follows: First, I lay the dark opaque ground and the light letters on the back of the glass with metallic paint of the quality ordinarily used by workmen in stained glass. The glass is then placed in an oven and brought to ahigh heat, almost to the fusing-point of the glass. Afterward it is annealed by slow Cooling.

'What I claim as my invention, and desire to secure by Letters Patent, is-- As a new manufacture, a plate-glass streetlamp sign' having white translucentletters and a dark opaque ground surrounding the letters, both being burned into the glass, sub' 45 stantially as described.

WILLIAM P. BUTLER- Witnesses CHARLES SWIFT, GEORGE S. MARKHAM. 

